| umls-concept:C2698259 | skos:definition | NCI: A monoclonal expansion of B-lymphocytes with or without the characteristic immunophenotype of chronic lymphocytic leukemia.,NCI: A condition in which a higher-than-normal number of identical B cells are found in the blood. People with MBL may develop other B-cell diseases, such as chronic lymphocytic leukemia (CLL). | lld:umls |
